metamask-extension/ui/app/css/itcss/components/send.scss

.send-screen-wrapper {
  display: flex;
  flex-direction: column;
  min-width: 320px;
  min-height: 500px;
  z-index: $send-card-z-index;
  position: absolute;
  top: 5%;

  @media screen and (max-width: $break-small) {
    top: 33px;
  }

}

.send-screen-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  margin-left: 3.5%;
  margin-right: 3.5%;
  background: $white;
  box-shadow: 0 2px 4px 0 rgba(0,0,0,0.08);
}

/* Send Screen */

.send-screen section {
  margin: 4px 16px;
}

.send-screen input {
  width: 100%;
  font-size: 12px;
}

.send-eth-icon {
  border-radius: 25px;
  width: 45px;
  height: 45px;
  border: 1px solid $alto;
  box-shadow: 0 2px 4px 0 rgba(0,0,0,0.08);
}

.send-screen-input-wrapper {
  width: 95%;
  position: relative;
}

.send-screen-input {
  width: 100%;
}

.send-screen-gas-input {
  width: 100%;
  background-color: $concrete;
  border-width: 0px;
  border-style: none;
}

.send-screen-amount-labels {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
}

.send-screen-gas-labels {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
}

.send-screen-bolt-icon {}

.selected-currency {
  color: $curious-blue;
}

.unselected-currency {
  cursor: pointer;
}

.send-screen-gas-input-customize {
  position: absolute;
  top: 30px;
  right: 18px;
  color: #3098DC;
  font-size: 12px;
  cursor: pointer;
}

.customize-gas-tooltip-container {
  position: absolute;
  left: 76px;
  bottom: 50px;
  width: 237px;
  height: 307px;
  background-color: white;
  opacity: 1;
  box-shadow: grey 0px 0px 5px;
  z-index: 1050;
  padding: 13px 19px;
  font-size: 16px;
  border-radius: 4px;
  font-family: 'Montserrat Regular';
}

.gas-tooltip-arrow {
  height: 25px;
  width: 25px;
  z-index: 1200;
  background: white;
  position: absolute;
  -webkit-transform: rotate(45deg);
  transform: rotate(45deg);
  left: 107px;
  top: 294px;
  -webkit-box-shadow: 0 0 5px grey;
  box-shadow: 2px 2px 2px $alto;
}

.customize-gas-tooltip-container input[type=number]::-webkit-inner-spin-button { 
    -webkit-appearance: none;
    display:none;
}

.customize-gas-tooltip-container input[type=number]:hover::-webkit-inner-spin-button { 
    -webkit-appearance: none;
    display:none;
}  

.customize-gas-tooltip {
  position: relative;
}

.gas-tooltip-label {
  font-size: 16px;
  color: $tundora;
}

.gas-tooltip-header {
  padding-bottom: 12px;
}

.gas-tooltip-input-label {
  margin-bottom: 5px;
}

.gas-tooltip-input-label i {
  color: $silver-chalice;
  margin-left: 6px;
}

.customize-gas-input {
  width: 178px;
  height: 28px;
  border: 1px solid $alto;
  font-size: 16px;
  color: $nile-blue;
  padding-left: 8px;
}

.customize-gas-input-wrapper {
  position: relative;
}

.gas-tooltip-input-detail {
  position: absolute;
  top: 4px;
  right: 26px;
  font-size: 12px;
  color: $silver-chalice;
}

.gas-tooltip-input-arrows {
  position: absolute;
  top: 0px;
  left: 178px;
  width: 17px;
  height: 28px;
  border: 1px solid #dadada;
  border-left: 0px;
  display: flex;
  flex-direction: column;
  color: #9b9b9b;
  font-size: 0.8em;
  padding: 1px 4px;
}